中文摘要：

基于GPS的姿态测量和结构健康监测系统具有速度快、精度高、可连续工作等特点,传统结构主要使用电缆连接天线和接收机。本文实验论证了一种光载GPS一机多天线系统。利用体积小、质量轻、损耗低、抗电磁干扰的光纤代替电缆,实现了天线与接收机之间的高质量连接,拓展了该系统的基线长度和测量区域;同时,在同一接收机中引入多个同步解算模块,避免了传统一机多天线系统信号切换时引入的周跳,从而大幅降低了数据处理算法的复杂性,提高了整体系统的效率和测量精度。实验结果表明,所提出的光载GPS一机多天线系统能精确测量出基线向量,且测量精度达到毫米量级,在飞行器姿态测量和建筑物结构健康监测等方面具有潜在的应用性。

英文摘要：

Attitude determination and structural health monitoring system based on GPS multiantenna has the advantages of fast speed,high precision and continuous working.However,the conventional systems usually use cable to connect antennas and receivers.A GPS-over-fiber multi-antenna receiver system is experimentally demonstrated.Thanks to the advantages of small size,light weight,low loss and immunity to electromagnetic interference of the optical fiber,the proposed system can achieve longer baseline and larger measuring areas than conventional systems.Parallel decoding algorithm is also applied in the proposed system.It can avoid cycle slips introduced by the signal switching in the conventional GPS multi-antenna system.The complexity of data processing algorithm is thus reduced and the efficiency and measuring precision are improved significantly.Experimental results show that the proposed GPS-over-fiber multi-antenna receiver system can measure the baseline accurately and the measurement error is only a few millimeters.The system can be potentially applied to attitude determination and structural health monitoring.